55631003 has 2 divisors, whose sum is σ = 55631004. Its totient is φ = 55631002.

The previous prime is 55630969. The next prime is 55631039. The reversal of 55631003 is 30013655.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55631003 - 2¹⁶ = 55565467 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55631003.

It is not a weakly prime, because it can be changed into another prime (55631053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27815501 + 27815502.

It is an arithmetic number, because the mean of its divisors is an integer number (27815502).

Almost surely, 2^55631003 is an apocalyptic number.

55631003 is a deficient number, since it is larger than the sum of its proper divisors (1).

55631003 is an equidigital number, since it uses as much as digits as its factorization.

55631003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1350, while the sum is 23.

The square root of 55631003 is about 7458.6193762653. The cubic root of 55631003 is about 381.7440675789.

Adding to 55631003 its reverse (30013655), we get a palindrome (85644658).

The spelling of 55631003 in words is "fifty-five million, six hundred thirty-one thousand, three".